Sleaford’s Thomas Warrington has answered the ‘call’ - and will use his ghost-hunting skills to complete a terrifying challenge in aid of Cancer Research UK.

Inside the bunker. Images supplied.

The 31-year-old will spend a full day and night in May inside a 125ft-deep decommissioned bunker.

“I’m a paranormal investigator and have done thousands of investigations at haunted sites as part of a team,” he said. “It was put to me that I should do this entirely on my own one time - so I thought it would be a good way to raise money for a charity close to my family.”

The nuclear bunker, in Essex, was constructed in the early 1950s as an air defence station - remaining a government building until the 1990s when it was decommissioned. It is now used for tours - with dummies mimicking military roles still lurking in the shadows. One theory as to why the bunker is haunted points to nearby ancient burial sites allegedly disturbed during its construction. Thomas will enter the bunker via a creepy passage leading down from the bungalow above.

“I’ve always wanted to tackle this location as it ticks all the boxes,” he said. “It’s supposedly very active and, right up to this day, people are still reporting poltergeist activity.”

The bungalow entrance to the Kelvedon Hatch nuclear bunker.

He will arm himself on the night with a host of equipment to carry out various experiments - including static cameras and a device that purports to pick up ‘natural’ energy created by a being - whether alive or in spirit.

Thomas says he has encountered poltergeist-type activity before. One such occasion, while carrying out a vigil in Leeds with his girlfriend, they heard a metallic knocking sound and turned their camera round to capture stones being thrown by an unseen force. But despite having spent many a night in a ‘haunted’ location, Thomas says he remains a sceptic.

“I’m very sceptical about the afterlife as I think most things can be explained scientifically. I think you have to be as an investigator. If you go in thinking it’s ghosts - then everything you hear or see becomes a ghost in your mind.”

Thomas has been a paranormal investigator since he was just nine, and now writes for paranormal magazines. He also carries out private investigations for families who are having trouble with spooks.

He added: “One of these was such a big investigation that it lasted five days and we had to sleep over there.”